Question : Hertz is a unit for measuring.

Option 1: Intensity of waves

Option 2: Frequency of waves

Option 3: Wavelength

Option 4: Clarity of waves

Question : Which of the following waves has the highest frequency?

Option 1: Radio

Option 2: Infrared

Option 3: Microwaves

Option 4: Gamma-rays

Question : ______ are also known as heat waves.

Option 1: Infrared waves

Option 2: Gamma rays

Option 3: Light waves

Option 4: X-rays

Question : The value of $\frac{\frac{5}{2}-\frac{3}{7} \times 1 \frac{4}{5} \div 3 \frac{6}{7}}{\frac{3}{2}+1 \frac{2}{5} \div 3 \frac{1}{2} \times 1 \frac{1}{4}}$ is:

Option 1: $2 \frac{3}{20}$

Option 2: $1\frac{2}{20}$

Option 3: $1 \frac{3}{20}$

Option 4: $1 \frac{7}{20}$

Question : ______ waves include visible light waves, X-rays, gamma rays, radio waves, microwaves, ultraviolet and infrared waves.

Option 1: Electromagnetic

Option 2: Mechanical

Option 3: Magnetic

Option 4: Electric